Improve documentation on regular expressions

Change-Id: Iac37872720b607b63e64e0a7ab3d1ec2bf0a37e9
diff --git a/Changes b/Changes
index f2bc996..bce0872 100755
--- a/Changes
+++ b/Changes
@@ -16,6 +16,7 @@
         - Improved documentation on data.
         - Removed documentation stub for wildcards
           (fully integrated in C2 documentation).
+        - Improved documentation on regular expressions.
 
 0.34 2019-06-26
         - Introduced guided tour (hebasta, #19).